condition mean min max 12pM Fe,Midday 50.3889 50.3889 50.3889 12pM Fe,Midnight 41.41275 41.3231 41.5024 58pM Fe,Midday 34.9048 34.9048 34.9048 58pM Fe,Midnight 30.121428571428574 24.4844 51.1788 233pM Fe,Midnight 16.9512 16.4973 17.4921 1160pM Fe,Midday 20.212157142857144 16.009 23.4915 1160pM Fe,Midnight 14.876133333333334 10.7175 19.4399 High carbon,Dark 16.082089333333332 3.51933 40.9045 High carbon,Light 14.922844615384616 2.05622 28.3995 Low carbon,Dark 19.8852 19.8852 19.8852 Phloroglucinol 7.2944466666666665 4.14985 9.10195 Silicon starvation,12h 26.8676 26.8676 26.8676